AM_Chalcophanite_1
Formula: Mn3 Zn O10 H6
Name: Chalcophanite
Unit cell: 7.541 7.541 20.824 90.0 90.0 120.0 , V=1025.54
Space group: R11-3 (1)

Post J E , Appleman D E , American Mineralogist , 73 (1988) p.1401-1404, Chalcophanite, ZnMn3O7.3(H2O): New crystal-structure determinations, Locality: Sterling Hill, New Jersey, Note: U(1,2) of O3 altered to match symmetry constraints